"How reliable is the 2008 Mercedes-Benz R350?"

"Based on 48 NHTSA complaints, the 2008 Mercedes-Benz R350 has a median complaint mileage of 90900 miles. The most common issue is SUSPENSION."

"What are common problems with the 2008 Mercedes-Benz R350?"

"The most frequently reported component in NHTSA complaints for the 2008 Mercedes-Benz R350 is SUSPENSION, accounting for a significant portion of the 48 total complaints filed."

2008 Mercedes-Benz R350: Reliability Data

Source: NHTSA — 48 complaints

Total Complaints

90,900mi

Median Mileage

SUSPENSION

Top Issue

Crash Reports

When Do Complaints Happen?

Distribution of NHTSA complaints by vehicle mileage at time of report.

67,500 25th Percentile

90,900 Median Mileage

107,000 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

SUSPENSION

STEERING

ENGINE

ELECTRICAL SYSTEM

SERVICE BRAKES

AIR BAGS

UNKNOWN OR OTHER

LATCHES/LOCKS/LINKAGES

POWER TRAIN:AUTOMATIC TRANSMISSION

SEAT BELTS

Severity Assessment

Crashes

Fires

Injuries

Deaths

Sample Complaint Reports

"06 APRIL 2008 ' VEHICLE LEASED FROM HOEHN MOTORS, CARLSBAD, CA ROUGHLY JANUARY 2009 TO PRESENT ' TRANSMISSION SLIPS (CHANGES GEARS UNEXPECTEDLY) ON SEVERAL OCCASIONS. UNABLE TO REPRODUCE RELIABLY, SO WE DID NOT BRING THE CAR IN OR REPORT. 10 APRIL 2009 ' (MILEAGE 17533) VEHICLE SUDDENLY LOSES..."

"SAFETY CONCERN WITH MERCEDES BENZ R350 2008. CHILD SAFETY LOCKS IN THE REAR SEAT ARE NOT AVAILABLE IN THIS VEHICLE. I HAVE TWO CHILD 4 & 2 YEAR. THERE WERE PLAYING WITH THE DOOR HANDLE AND THE DOOR LOCK AND OPENED THE DOOR WHILE THE VEHICLE WAS IN USED. NO CRASH. THIS RISK CAN BE DANGEROUS FOR MY K..."

"THIS VEHICLE HAS A BALANCE SHAFT AND INTAKE MANIFOLD ISSUE AS WELL AS A AIR SUSPENSION PROBLEM. BOTH PROBLEMS ARE A MANUFACTURE DEFECT THAT IS COMMON IN OTHER MB R350 VEHICLES. MB ACCEPTS THAT THIS VEHICLE MODEL HAVE A CONGLOMERATE OF PROBLEMS AND IS NOT TAKING RESPONSIBILITY TO CREATE A RECALL. TH..."

Source: NHTSA ODI Complaints Database. Names and identifying details omitted.

Data source: View this vehicle on NHTSA.gov | NHTSA ODI Complaints Database. Public domain.

Methodology: Complaint counts and mileage distributions are computed directly from consumer-reported NHTSA complaints. This data represents reported issues, not failure rates — vehicles without complaints are not represented. Full methodology.

Data through: 2026-03-28